Adaptation of the gypsy moth to an unsuitable host plant
2002
Тип документа:
Чланак у часопису (Објављена верзија)
,
© 2002Kluwer Academic Publishers
Метаподаци
Приказ свих података о документуАпстракт:
The pattern of adaptation with regard to life history traits and traits thought to be important in feeding habits of
caterpillars in two populations of the gypsy moth (Lymantria dispar L.; Lepidoptera: Lymantriidae) originating
from the locust tree (Robinia pseudoacacia; Fabaceae) and oak (Quercus petrea; Fagaceae) forests were investigated
in the laboratory. The Robinia population has experienced unsuitable locust tree leaves as an exclusive
food resource for more than 40 years. Since Quercus species are the principal host plants of the gypsy moth,
the specific objectives of this study have been to measure the extent of differentiation between ancestral and
derived populations in several life history traits (egg-to-adult viability, duration of larval and pupal stages, and
pupal weight) and nutritional indices – relative growth rate (RGR), relative consumption rate (RCR), assimilation
efficiency (AD), gross growth efficiency (ECI), and net growth efficiency (ECD). Significant differences between
the Quercus and Robinia populations were detected in pupal duration, RGR, RCR, and AD. The presence of a
significant population × host interaction in traits such as preadult viability, duration of pupal stage, RGR, and ECI
suggests that adaptation of the gypsy moth to the unsuitable host might be ongoing. Using a full-sib design, we
screened for genetic variation in life history traits within both populations, and examined the genetic correlations of
performance across oak and locust leaves within both populations. The genetic variances for analyzed life history
traits were lower under conditions that are commonly encountered in nature. Our data show that positive cross-host
genetic correlations preponderate within both populations.
Кључне речи:
Lymantria dispar; life history traits; nutritional indices; trade-offИзвор:
Entomologia Experimentalis et Applicata, 2002, 102, 1, 75-86
DOI: 10.1046/j.1570-7458.2002.00926.x
ISSN: 0013-8703
WoS: 000175092400008
Scopus: 2-s2.0-0036093143
URI
https://onlinelibrary.wiley.com/doi/10.1046/j.1570-7458.2002.00926.xhttps://radar.ibiss.bg.ac.rs/handle/123456789/3971